mirror of
https://github.com/hwchase17/langchain.git
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844955d6e1
Assigning missed defaults in various classes. Most clients were being
assigned during the `model_validator(mode="before")` step, so this
change should amount to a no-op in those cases.
---
This PR was autogenerated using gritql
```shell
grit apply 'class_definition(name=$C, $body, superclasses=$S) where {
$C <: ! "Config", // Does not work in this scope, but works after class_definition
$body <: block($statements),
$statements <: some bubble assignment(left=$x, right=$y, type=$t) as $A where {
or {
$y <: `Field($z)`,
$x <: "model_config"
}
},
// And has either Any or Optional fields without a default
$statements <: some bubble assignment(left=$x, right=$y, type=$t) as $A where {
$t <: or {
r"Optional.*",
r"Any",
r"Union[None, .*]",
r"Union[.*, None, .*]",
r"Union[.*, None]",
},
$y <: ., // Match empty node
$t => `$t = None`,
},
}
' --language python .
```
78 lines
2.4 KiB
Python
78 lines
2.4 KiB
Python
"""Util that calls OpenWeatherMap using PyOWM."""
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from typing import Any, Dict, Optional
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from langchain_core.utils import get_from_dict_or_env
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from pydantic import BaseModel, ConfigDict, model_validator
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class OpenWeatherMapAPIWrapper(BaseModel):
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"""Wrapper for OpenWeatherMap API using PyOWM.
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Docs for using:
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1. Go to OpenWeatherMap and sign up for an API key
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2. Save your API KEY into OPENWEATHERMAP_API_KEY env variable
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3. pip install pyowm
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"""
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owm: Any = None
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openweathermap_api_key: Optional[str] = None
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model_config = ConfigDict(
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extra="forbid",
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)
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@model_validator(mode="before")
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@classmethod
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def validate_environment(cls, values: Dict) -> Any:
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"""Validate that api key exists in environment."""
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openweathermap_api_key = get_from_dict_or_env(
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values, "openweathermap_api_key", "OPENWEATHERMAP_API_KEY"
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)
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try:
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import pyowm
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except ImportError:
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raise ImportError(
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"pyowm is not installed. Please install it with `pip install pyowm`"
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)
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owm = pyowm.OWM(openweathermap_api_key)
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values["owm"] = owm
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return values
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def _format_weather_info(self, location: str, w: Any) -> str:
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detailed_status = w.detailed_status
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wind = w.wind()
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humidity = w.humidity
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temperature = w.temperature("celsius")
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rain = w.rain
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heat_index = w.heat_index
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clouds = w.clouds
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return (
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f"In {location}, the current weather is as follows:\n"
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f"Detailed status: {detailed_status}\n"
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f"Wind speed: {wind['speed']} m/s, direction: {wind['deg']}°\n"
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f"Humidity: {humidity}%\n"
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f"Temperature: \n"
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f" - Current: {temperature['temp']}°C\n"
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f" - High: {temperature['temp_max']}°C\n"
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f" - Low: {temperature['temp_min']}°C\n"
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f" - Feels like: {temperature['feels_like']}°C\n"
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f"Rain: {rain}\n"
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f"Heat index: {heat_index}\n"
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f"Cloud cover: {clouds}%"
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)
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def run(self, location: str) -> str:
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"""Get the current weather information for a specified location."""
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mgr = self.owm.weather_manager()
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observation = mgr.weather_at_place(location)
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w = observation.weather
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return self._format_weather_info(location, w)
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